diff options
Diffstat (limited to 'kamon-system-metrics/src/main/scala/kamon/metrics/HeapMetrics.scala')
-rw-r--r-- | kamon-system-metrics/src/main/scala/kamon/metrics/HeapMetrics.scala | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/kamon-system-metrics/src/main/scala/kamon/metrics/HeapMetrics.scala b/kamon-system-metrics/src/main/scala/kamon/metrics/HeapMetrics.scala new file mode 100644 index 00000000..09174f47 --- /dev/null +++ b/kamon-system-metrics/src/main/scala/kamon/metrics/HeapMetrics.scala @@ -0,0 +1,82 @@ +/* + * ========================================================================================= + * Copyright © 2013-2014 the kamon project <http://kamon.io/> + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software distributed under the + * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, + * either express or implied. See the License for the specific language governing permissions + * and limitations under the License. + * ========================================================================================= + */ +package kamon.metrics + +import java.lang.management.ManagementFactory + +import akka.actor.ActorSystem +import com.typesafe.config.Config +import kamon.metric._ +import kamon.metric.instrument.{ Gauge, Histogram } + +case class HeapMetrics(name: String) extends MetricGroupIdentity { + val category = HeapMetrics +} + +object HeapMetrics extends MetricGroupCategory { + val name = "heap" + + case object Used extends MetricIdentity { val name = "used-heap" } + case object Max extends MetricIdentity { val name = "max-heap" } + case object Committed extends MetricIdentity { val name = "committed-heap" } + + case class HeapMetricRecorder(used: Gauge, max: Gauge, committed: Gauge) + extends MetricGroupRecorder { + + def collect(context: CollectionContext): MetricGroupSnapshot = { + HeapMetricSnapshot(used.collect(context), max.collect(context), committed.collect(context)) + } + + def cleanup: Unit = {} + } + + case class HeapMetricSnapshot(used: Histogram.Snapshot, max: Histogram.Snapshot, committed: Histogram.Snapshot) + extends MetricGroupSnapshot { + + type GroupSnapshotType = HeapMetricSnapshot + + def merge(that: GroupSnapshotType, context: CollectionContext): GroupSnapshotType = { + HeapMetricSnapshot(used.merge(that.used, context), max.merge(that.max, context), committed.merge(that.committed, context)) + } + + lazy val metrics: Map[MetricIdentity, MetricSnapshot] = Map( + Used -> used, + Max -> max, + Committed -> committed) + } + + val Factory = new MetricGroupFactory { + + val memory = ManagementFactory.getMemoryMXBean + def heap = memory.getHeapMemoryUsage + + type GroupRecorder = HeapMetricRecorder + + def create(config: Config, system: ActorSystem): GroupRecorder = { + val settings = config.getConfig("precision.jvm.heap") + + val usedHeapConfig = settings.getConfig("used") + val maxHeapConfig = settings.getConfig("max") + val committedHeapConfig = settings.getConfig("committed") + + new HeapMetricRecorder( + Gauge.fromConfig(usedHeapConfig, system)(() ⇒ heap.getUsed), + Gauge.fromConfig(maxHeapConfig, system)(() ⇒ heap.getMax), + Gauge.fromConfig(committedHeapConfig, system)(() ⇒ heap.getCommitted)) + } + } +} + |